1303212220 has 24 divisors (see below), whose sum is σ = 2737551600. Its totient is φ = 521131392.

The previous prime is 1303212217. The next prime is 1303212233. The reversal of 1303212220 is 222123031.

It is a junction number, because it is equal to n+sod(n) for n = 1303212194 and 1303212203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80791 + ... + 95569.

It is an arithmetic number, because the mean of its divisors is an integer number (114064650).

Almost surely, 2^1303212220 is an apocalyptic number.

1303212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1303212220 is an abundant number, since it is smaller than the sum of its proper divisors (1434339380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1303212220 is a wasteful number, since it uses less digits than its factorization.

1303212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19197 (or 19195 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1303212220 is about 36100.0307479093. The cubic root of 1303212220 is about 1092.2910652330.

Adding to 1303212220 its reverse (222123031), we get a palindrome (1525335251).

It can be divided in two parts, 13032 and 12220, that added together give a palindrome (25252).

The spelling of 1303212220 in words is "one billion, three hundred three million, two hundred twelve thousand, two hundred twenty".